Carrie Furnace

The Carrie Furnaces were built in 1881 as part of U.S. Steel's Homestead Works, a sprawling 400-acre complex that spanned both sides of the Monogahela river. They produced up to 1,250 tons of steel a day until 1978 when they were closed. While the majority of the site was razed for developments that never materialized (and a shopping center that did), the 100-foot high furnaces still stand; now they are an extremely rare example of pre-WWII ironmaking technology. The furnaces were designated as a national historic landmark in 2006 and preservation efforts are underway.